Effect of feldspar composition on thermoluminescence in minerals separated from food

被引：7
|
作者：
Pinnioja, S
Siitari-Kauppi, M
Lindberg, A
机构：
[1] Univ Helsinki, Lab Radiochem, FIN-00014 Helsinki, Finland
[2] Geol Survey Finland, Espoo 02150, Finland
来源：
RADIATION PHYSICS AND CHEMISTRY | 1999年 / 54卷 / 05期
关键词：
D O I：
10.1016/S0969-806X(97)00284-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Study was made of factors influencing the thermoluminescence (TL) intensity of feldspars separated from irradiated foods. Autoradiography and optical densitometry with application of digital image processing was found to be a suitable method for determining the mineral specific differences in irradiated feldspars. Alteration of K feldspar was observed to reduce the luminescence intensity. A structural change from unaltered mineral to fully seriticized form without marked change in element composition was accompanied by a decrease in TL from very intensive to nonobservable. Likewise increase in FeO concentration during alteration was accompanied by decrease in the TL intensity. Thermoluminescence of plagioclase increased with the CaO/Na2O ratio. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：505 / 516
页数：12
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